[Resource Topic] 2003/179: VMPC One-Way Function

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VMPC One-Way Function

Authors: Bartosz Zoltak


The VMPC function is a combination of two basic operations: permutation composition and integer addition. The function resulting from this combination shows to have very high resistance to inverting. Computational effort of about 2^260 operations is estimated to be required to invert the VMPC function. The value of the function can be computed with 3 elementary computer processor instructions per byte. An open question is whether the function’s simplicity raises a realistic chance that the lower bound on the complexity of inverting it might be proved.

ePrint: https://eprint.iacr.org/2003/179

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